Abstract:
A valve and valve assembly having a hybrid valve member are provided. The valve includes a housing (22), with an inlet (24), a primary outlet (26), and a secondary outlet (28). The hybrid valve member is rotatably positioned within the housing. The hybrid valve member has a fully closed position wherein the hybrid valve member prevents flow between the inlet and the primary outlet and prevents flow between the inlet and the secondary outlet. The hybrid valve member includes a planar portion and a hemispherical portion on a first side thereof. The planar portion faces the inlet in the fully closed position and the hemispherical portion faces the secondary outlet in the fully closed position.
Abstract:
A rotary valve (10) is provided including a valve element (32) mounted within the flow path (14) of a body (12) and rotatable about a stem axis. A peripheral seating surface on the valve body (12) surrounds the flow path through the valve body (12) and is spaced from the stem axis (SA) for sealing engagement with the valve element (32) when rotated to its closed position. The peripheral seating surface on the valve body (12) is preferably annular. The valve element (32) includes a rigid body (34) with a peripheral resilient overlay (42). The resilient overlay (42) has a pressure responsive sealing member (50) for flexing in response to fluid pressure into sealing engagement with the seating surface. A peripheral backup shoulder (58) is provided on the rigid body (34) of the valve element (32) for preventing extrusion of the sealing member (50) under pressure when the valve element (32) is in engagement with the annular seating surface.
Abstract:
The disclosed embodiments include ball valves (10, 70) having integrated seats (38, 39, 76, 78, 80, 82). The integrated seats are included in a ball body assembly (28, 72, 74) of a valve body (22, 88). The ball body assembly (28, 72, 74) may rotate with respect to the valve body (22, 88) to open or close the valve (10, 70). The integrated seats (38, 39, 76, 78, 80, 82) may contact walls of a bore (40, 42, 96, 98) to sealingly close the valve (10, 70).
Abstract:
A method to test a plug valve seal by embedding a test coupon into the face of the slip. Even the heat energy is averaged by placing the test coupon at the midsection of the slip. During the bond adhesive application all applicable surfaces have the same adhesive applied during the same time frame in the same environment (except under test coupon tab which shall be prevented from adhering mechanically or chemically). The elastomer prepared for the seal groove is identical and is prepared in the same batch as that for the test coupon and all installed with the same tackifying agent by the same individual. The seal cross-section is the same as the test section of the seal test coupon. The post cure is next completed equally on seal and test coupon. After cool down occurs, the test coupon test tab (which was prevented from adhering mechanically or chemically earlier) is released and placed into a pull tab fixture and a varying known load is applied. The elongation is monitored and a stress/strain curve can be generated, verifying material properties. Further pulled to failure, the seal groove adhesion is verified. The removed test tab can then be compression set tested and a variety of other tests can be performed. Material and performance certifications can be generated for each slip seal.
Abstract:
Valves having seats and counterseats with various contours are provided. In one embodiment, a valve includes a body and a flow control assembly inside the body. The flow control assembly includes a ball, a seat installed on the ball, and a counterseat. The ball is rotatable between open and closed positions to control flow through the body and the seat and counterseat include mating surfaces that engage when the ball is in the closed position such that the seat seals against the counterseat along the mating surfaces. Further, the mating surface of the counterseat can be a concave surface, the mating surface of the seat can be a convex surface, and at least one of the mating surfaces can have a toroidal contour.
Abstract:
A valve member for a container comprising a generally cylindrical passage member (10) having a flange (11) for attachment to the wall of a container surrounding an aperture (13) in the wall of the container through which the passage member (10) extends including a disc-shaped value member (20) having a domed surface presenting a convex surface to the interior of the container. The value member (20) may be of the form of a disc offset with respect to an axis of rotation thereof. The valve member (20) may be provided with an overmoulded sealing member (125). A temper evident diaphragm (15) may be frangibly connected to an end of the passage member (20) in order to indicate whether the container has been opened.
Abstract:
Ball valve arrangement comprising metal-to-metal sealing between the two main parts of the valve, viz. a valve housing (21) and a valve member (22, 25) for the through passage (20) in the closed position of the valve. A metal seal in the form of a resilient ring (27) is arranged with one circumferential portion (26) firmly and sealingly anchored (28) in one (22, 25) of the two main parts, whereas another circumferential or edge portion (27B) of the resilient ring (27) sealingly and resiliently engages a cooperating sealing surface (30) on the other (21) main part. A gap (27A) which is normally present between the resilient ring (27) and adjacent portions (23) of said one (22, 25) of the main parts, is open towards a higher pressure occuring in the valve.
Abstract:
본 발명의 일 실시예에 따르면, 볼 밸브에 장착되는 볼에 있어서, 전방에서 후방으로 관통하는 소정 직경의 관통구와 볼 밸브의 스템에 결합하기 위해 상부에 형성된 오목홈을 구비한 볼 본체; 및 상기 볼 본체의 좌측면과 우측면에 각각 결합된 인서트 부재;를 포함하고, 상기 볼이 볼 밸브에 장착되어 볼 밸브를 폐쇄하는 위치에 있을 때, 적어도 상기 볼 밸브의 시트(seat)와 접촉하는 볼의 영역을 상기 인서트 부재가 커버하도록, 상기 인서트 부재가 상기 볼 본체에 결합되고, 상기 인서트 부재는 초고경도(super hard) 재질로 형성된 것을 특징으로 하는 볼 밸브용 볼을 개시한다.
Abstract:
Bei einem Kugelventil mit einem Gehäuse (10), das zwei miteinander in Verbindung stehende Anschlussöffnungen aufweist, einem in dem Gehäuse angeordneten, bewegbaren Schliesskörper (1), der einen Grundkörper (11) und einen lösbar mit dem Grundkörper verbundenen Kalottenkörper (2) mit einer Dichtfläche (7) aufweist, ist der Kalottenkörper (2) in einer Ausnehmung (14) des Grundkörpers (11) angeordnet, wobei der Kalottenkörper (2) mit einer zur Mittelachse der Kalotte konzentrischen, sich axial erstreckenden Mantelfläche in die Ausnehmung (14) eingreift und in dieser zentriert ist und wobei der Abstand des Kalottenkörpers (2) vom Kugelmittelpunkt durch Mittel zur axialen Abstützung des Kalottenkörpers (2) an dem Grundkörper (11) einstellbar ist.